Apparatus for watering areas of land



Jam-5 1926. 1,568,214

D. ELDER APPARATUS FOR WATERING AREAS OF LAND o i l Filed Jan. 5, 1922 3 Sheets-Sheet 1 25 a2 27 la IS ISI- sq FIG a Jan. 5 1926.

Y D. ELDER APPARATUS FOR WATERING AREAS OF LAND original Filed Jan. 5, 1922 3 Sheets-Sheet 2 mental,

Jan. 5 ,1926. 1,568,214

D. ELDER APPARATUS FOR WATERING AREAS OF LAND Original Filed J 5. 1922 3 Sheets-Sheet 3 Jwomtoc Patented Jan. 5, 1926.

UNITED STATES DONALD ELDER, OF ONEHUNGA, AUCKLAND, NEW ZEALAND.

APPARATUS FOR WATERING- AREAS OF LAND;

Original application filed January 5,

1922, Serial lib/527,259. Divided and. this application filed July 28, 1922. Serial No. 578,196.

To all whom it 'inage concern:

Be it known that I, DONALD ELDER, a citizen of the'Dominion of New Zealand, residing atonehunga, Auckland, in the ProvincialDistrict of Auckland, in the Dominion ofNew Zealand',have invented certain new and useful Improvements in Apparatus for WVatering Areas of Land, of which the following is a specification.

This invention relates to improvements in means employed in watering areas of land and is a division of my original application filed January 5, 1922, Serial No. 527.259.

The invention has for its object to provide an apparatus for watering land comprising the watering being made to take place at predetermined intervals and so that each watering extends over a predetermined length of time, in order that every portion of an area under treatment, no matter what the shape of the latter is, will have evenly distributed thereon at regular intervals, a given quantity of water The improved apparatus comprises a sprayer, and a device hereinafter referred to as a repeater for controlling the operation of the whole apparatus in that it causes the waterings to take place at the desired intervals as circumstances require. The repeater works in conjunction with and is dependent for its operation upon the working of a further device hereinafter referred to as a regulator which latter is preferably connected with a sprayer of the type disclosed in my copending application Serial No. 527,259.

The portion of the control of the watering of the land vested in the'latter device is the control of the length of the periods during which the waterings shall take place, so as to ensure that a given quantity of water wil be distributed over the area in a given time following each turning on operation of the repeater.

The repeater comprises a pair of cylinders containing plungers, on rods connected to the opposite ends of a lever fixed on the end ofthe plug of a main cock controlling the flow of water from a water service to the apparatus. One of these cylinders is conneeted with and is adapted to be put in communication with the water service pipe, or the inlet side of said main cock, for the purpose of receiving water pressure from' the water service pipe, whereby the plungers in said cylinder will be operated to efi ect the opening of the main cock, in. order that water may pass to the regulator and from the latter to the sprayer. The other of the cylinders is connected with and is adapted to be put in communication with the pipe connecting the main cock with the regulator, whereby said: last mentioned cylinder on the pressure in the pipe from the main cock exceeding that which exists while the sprayer is in operation receives pressure which operates its plungers and brings about the turning off of the main cock.

The repeater is also fitted with two cocks through which water must pass on its way from the water service pipe, or the inlet side of the cock to the cylinder. the plungersof which operate to bring about the turning on of the main cock. One of these cocks is constructed. and operates in. conjunction with the main cock for the purpose of controlling the number of times the latter shall operate, while the other of said cocks is provided for regulating the rate of flow of the water to the last mentioned cylinder.

Means are also provided on the repeater for providing for the discharge of water from the cylinders after the plungers therein have operated. and from the pipe connecting the main. cock with the regulator, after the main cock has been turned off.

The regulator comprises a cylinder divided into three compartments, between the lowermost 0t which and the central or intermediate compartment a movable partition in the form of a plunger is provided. The central or intermediate compartment or the space between the plunger and the up per fixed division is filled with water, the length of time taken in the displacement of which or portion thereof, into the uppermost compartment through. a regulatable valve in the upper division, by the pressure created in the lowermost compartment on the entrance of water thereinto from the repeater, equals the length of the period of each watering. The regulator is connected with the sprayer and also when necessary with a further regulator. In the latter case the cutting off of the water from the sprayer and the opening of the water passage to a succeeding regulator takes place simultaneously on the plunger in the regulator rising a predetermined height.

Where a succeeding regulator is not employed, the cutting off of the water from the sprayer results in an excess of pressure in the pipe from the main cock, whereupon the repeater operates and causes the said main cock to be turned off.

he invention will now be more particularly described in conjunction with the accompanying drawings wherein Figure 1 is an elevation (with parts in section) of the repeater, and

Figure 2 is a plan view (slightly enlarged) of same.

Figure 3 is an elevation of the main cock, from the opposite side to that shown in Figure 1 showing the quadrant and spring pawl thereon.

Figure 4 is a sectional plan view of the repeating or dial cock of the repeater.

Figure 5 is a part elevation and a part sectional elevation of the regulator.

Figure 6 is an enlarged view of the regulator plunger.

Figure 7 is an enlarged sectional elevation of the valve used at the top of the regulator.

Figure 8 is a perspective view of the valve used in the lower end of the regulator for controlling the passage of water to a further regulator.

Figure 9 is a diagrammatic view of the regulator repeater operatively associated with a sprayer.

Referring to Figures 1 and 2 of the drawing which illustrate the repeater. 1 is a service pipe supplying water to the main cock 2, and 3 is the pipe through which. the water passes from the cock 2 to the regulator illustrated in Figure 5.

The plug 4 of the cock 2 projects through and wor is freely in the plate 5 secured on the pipes 1 and 3 said plate being fOllTiGd with a bracket 5 in or to which are secured cyl nders 6 and 7 The lever S mounted centrally on the plug 1 on the same side of the plate 5 as the cylinders 6 and '7, has pivotally connected to one end a rod 9. on the lower end of which is secured a plunger 10 which wor s in the cylinder 7. A lower plunger 11 in the cylinder '4, is suspended from the upper plunger 10 by a spiral spring 12. The other end of the lever 8 has pivotally connected thereto a rod 13 on the lower end of which is a plunger 14 operating in the cylinder 6 while suspended within the latter from the upper plunger 14 by a spiral spring l4: is a lower plunger 15.

The lever 8 has projecting therefrom at right angles to its length a central arm 8 with a pointed outer end adapted to work between stops 16, and 17 on the plate Above the stops 16, 17 are plates 18, 19 pivotally attached to the plate 5 at their inner ends and normally resting in horizontal positions on stops 18, 19 under the influence of compression springs 29, 21 regulatable by means of thumb screws 22, 23 working through brackets 24. at the top oi the plate 5.

The plate 18 has pivoted thereon a catch 25 inward movement of which is limited by a stop 26 on the plate 18, and capable of outward movement against the action of a spring 27, mounted between said catch 25, and an extension 28 of the plate 18.

The plate 19 has pivoted thereon a catch 29, inward movement of which is limited by a stop 30 on the plate 19, and capable of outward movement against the action of a spring 31 mounted between the catch 29 and an extension 32 oi the plate 12.

The lower ends of the catches 25, 29 are sloped or curved inwards and upwards.

A branch pipe 33 Figure 2 communicates with the pipe 1 and is fitted with a cock 34 and a cock 35 is connected by means of a pipe 34 with an elbow 36 screwing on a nipple which projects through the plate 5 outside the cylinder 6 and from the same side of the plate as said cylinder 6. Neither of the pipes 33, 34 communicate with the pipe 3, 3 being merely a solid plug screwed into the T on the latter pipe to pro vide a support for said pipes and The elbow 36 is connected with the lower end of the cylinder 6 by a pipe 37 in which are placed cocks 38, 39.

The plug of the cock 38 has keyed thereon one end of a rod 10 slidablc in a sleeve 11 pivoted to the same end of the lever 8 as the rod 13.

Also keyed on the plug of the cock 38 is an arm 42. and keyed on the plug of the cock 39 is an arm l3 the two arms 42. being pivotally connected at their outer ends by a rod 4%. The plugs of the cocks 38. 39 are arranged and connected, so that when the cock 38 opens the cock 39 closes, and vice versa.

On the outer side of the cylinder 7 is a pipe connected at its lower end with the bottom of the cylinder 'Z, and at its upper end screwing into an elbow 45 tted on to a nipple passing through the plate 5 into the pipe 3.

This pipe 15 is provided with cocks 46, 47 on the plugs of which are keyed arms 18,

9 spe t ve y, said M1118 bei g p ret y conn cte t t eir ou e nds by a r d .50- Also keyed-onthe plugof the cock 46is a rod,5l whichis sli dable in asleeve 52 pivotally connected to thesame end of the lever end of the cylinder.

A spring 57 on the rod 55 between the plug 56 and the plunger 54 keeps the latter normally pressed towards the nipple 53,.

Outside the cylinder 53 is a sliding rod 58 one end of which'is pivotallyconnected to the handle of a cook '59 on apipe 60 leading from the plunger end of the cylinder 53 to the pipe 45 between the cocks 46, 47 thereon.

The outer end of the sliding rod 58 and the outer end of the plunger rod 55 are rigidly connected by a cross piece 61, so that both rods must move together in either direction.

The plug 62 of the cock34 (Figures 2, 3 and 4), on the; branch pipe 33 has fitted on its upperend a dial'63 which works beneath a fixed pointer 64 on the pipe 33. Portion of the periphery of the dial 63 is formed into ratchet teeth 65, adapted to be engaged when required by a springpawl66 on aquadrant 67 mounted on the plug4 atthe opposite side of the cock 2, to the. plate 5.

The pawl 66 is attached to the quadrant at its lower endonly, the other end being simply'bent around the radial edge of the quadrant'in order that said pawl can lie flat against the quadrant for its full length when uecesszu-y.

The dial 63 has markedthereon numerals, running from 1 up to the total number of teeth on thedial and diametrically opposite said numerals is the letter R while halfway between the latter and the numerals, the letter N is placed onthe dial.

The plug 62 of the cook 34 has itsport 62* (Figure 4) considerably enlarged at each end so that if the diali63 besetviwith the highest numeral thereon opposite the-pointer 64, it will take an equivalent number of -turning on movementsof the plug 4 of the cock 2, to cause the pawl 66 to turn the plug '62 far enough round in the cock 34-to close-the waterwaythrough same. For example take the dial 63 shown in the drawing where the highest numeral is 4, say the numeral 4 is set opposite the pointer 64, it will require four separate turning on movements of the plug 4 to completely close the cook 34, as each time a turning on -movement of the plug Atakes place, the pawl 66 on the. quadrent 67'. engages a single tooth of the dial 63 and turns the, plug 62 a distance equal only to one fourth of the distance across the enlarged openings of the port 62 If after the cook 34 has been closed a further turning on movement of the plug 4 shouldoccur, the pawl 66 will not impart turning movement to the dial 63, as the portion of the latter presented to the pawl, will have no teeth and the pawl 66 will simply be pressed fiat against the quadrant 67. \Vhen the letter R is brought opposite the pointer 64, the port 62 is in such a position that the cock is opened with the teeth 65 located out ofthe way of theflpawl 66 so that movement of thelatter will not turn the dial 63. Similarly when the letter N is oppo site the pointer 64, the pawl 66 will not impart turning movement to the dial 63 owing to the teeth 65 being clear of the pawl 66 only in this case the plug 62 is brought to a position which closes the water way through the cook 34.

The plungers 14, 15in the cylinder 6 are utilized for the purpose of imparting movement to the lever 8 in order to cause the plug 4 to open the cock 2, while the plungers 10, 11 in the cylinder '7 are provided for the purpose of imparting the reverse movement to the lever 8 to cause the plug 4 to close the cock 2.

The cook 35 on the branch pipe 33 is provided for the purpose of regulating the flow of water-to thecyli-nder 6, in order to cause the cock 2 to be turned on at predetermined intervals, and to facilitate the setting of this cock, the plug thereof is provided with a pointer 35* which works over a scale or series or graduations 35 by the aid of which the cook 35 can be adjusted to regulate the flow of water as required.

The operation of the repeater will now be briefly described, but before commencing such description, it will be pointed out that as shown in the drawing the cock 2 is open so water can pass fromthe pipe 1 through the cock 2 to the pipe 3. The end of the plug 4 contains a groot e 4 which when horizontal denotes that the cock 2 is open, and when vertical serves to indicate that saidcock is closed.

When the cock 2 is closed the arm 8 rests against the stop 16, the rod 9 is withdrawn from the cylinder "7 the rod 13 is down in the cylinder6, the cooks 38, 46 and 47 are open and the cook 39 closed, while the positions of the rods 40, 51 are the reverse to that vshown.

It will be assumed that the repeater is to cause the sprayer to distribute water over the land four times and the dial 63 has therefore been turned so that the numeral 4 is opposite the pointer 64. Also .the cock 35 has been set to regulate the inflow of water-to the-cylinder Goat a rate that will cause the cock 2 to be turned on after a predetermined period of time has lapsed from its turning off.

The cock 2 being closed water passes from the pipe 1 into the pipe 33 through the cocks 34, 35 and via the pipe 34' to the pipe 37, the cooks 38, 39, the cock 38 being open and the cook 39 closed. The water from the pipe 37 enters the bottom of the cylinder 6 and accumulating therein forces the plunger 15 which is at the bottom of the cylinder upwards thereby compressing the spring 14 between the plungers 14, 15. It must be remembered that in this position, the arm 8 is held below the catch 25.

The pressure in the cylinder 6 gradually increases, until it is sufiicient to overcome the resistance or" the spring 21 and as this occurs the plungers 14, 15 move upwards in the cylinder 6 causing the rod 13 to force upwards the end of the lever 8 to which it is connected. This movement has the ctfect of forcing the pointed end of the arm 8 to pass the catch 25 pivoted on the plate 18, the latter lifting on its pivot against the action of the spring 21. The lever 8 and arm 8 then swing over to the position shown in Figure 1, said arm engaging and passing below the catch 29 which moves outward against the action of the spring 31 to allow t e arm 8" to come to rest against the stop 17. This last described movement of the lever 8 caused by the upward movement of the plungers 14, 15 in the cylinder 6 opens the cock 2, and water is now en abled to pass from the pipe 1 through the cock 2 to the pipe 3, leading to a regulator to be hereinafter described.

The turning on movement of the lever 8 brings the rods 40, 44 and arms 42, 43 to the positions shown in Figure 1, whereby the cook 39 is opened to permit water in the cylinder 6 to be discharged by the expansion ot the spring 14 and the cook 38 to be closed, to prevent communication between the pipe 37 and the pipe 34.

The same turning movement of the lever 8 brings the rods 51, and arms 48, 49 to the positions indicated in Figure 1, which results in both the cocks 46, 47 being closed.

Water is now flowing through the pipe 3 to a regulator and from the latter to a sprayer, and so long as water is discharging from the system nothing happens.

Immediately, however, the discharge of water ceases, the pressure in the pipe 3 increases and the increased pressure also acts in the cylinder 53 which is in communication with the pipe 3 by way of the nipple 53 The spring 57 is set to withstand or to remain expanded while the pressure in the pipe 3 is normal, which occurs while water is discharging from the system, but immediately an increase of pressure occurs in the pipe 3 on the cessation of the discharge of water, the piston 54 is forced or moved against the action of the compression spring 57 whereby the rod and the rod 58 are moved together away from the cook 59, the latter being opened by the movement of the rod 58 just indicated.

The opening of the cock 59 allows water to pass through the pipes 60 and 45 (the cocks 46, 47 being closed) into the bottom of the cylinder 7, the pistons 1O, 11 in the latter now occupying the positions shown in the drawings. 1

The accumulation of pressure in the lower end of the cylinder forces the plunger 11 upwards and compresses the spring 12 against the plunger 10, until ultimately both plungers 10, 11 move upwards in the cylinder 7, and cause the arm 8 to clear the catch 29 by forcing the latter and the plate 19 on which it is mounted upwards against the action of the spring 20.

The arm 8 then swings over against the stop 16, and the lever 8 reverts to its former position which is at right angles to that shown in Figure 1 and in moving from the position shown in its former position it shuts oil or closes the cock 2.

The turning off movement of the lever 8 operates the rods 40, 44 and arms 42, 43 to open the cook 38, and to close the cook 39, the same movement of said lever 8 causing the rods 51, 50 and arms 48, 49 to open both cocks 46, 47, whereby the water in the cylinder 7 is enabled to discharge through the cock 47 under the expansion of the spring 12, and water in the pipe 3 and regulator or regulators connected therewith to pass through the cook 46, as will be afterwards described.

Water will new again enter the cylinder 6 by way of the pipes 33, and 34 the cook 35 having been set to regulate the flow of water, so that the upward movement of the plungers 14, 15 in the cylinder 6. to open the cock 2, will occur after a predetermined period of time has elapsed following the closing of the cock 2.

Each time the plug 4 of the cock 2 is given turning movement to open the cook, it makes a quarter turn and just before it finishes such movement the spring pawl 66 on the quadrant 67 engages one of the teeth on the dial 63 and imparts a slight turning movement to the plug 62 of the cock 34. As the plug 4 of the cock is turned to close the latter cock the pawl 66 slips against the teeth 65 so that reverse turning movement is not given the plug 62.

In the present case it is desired as before mentioned that the cock 2 shall be opened and closed four times to cause water to be sprayed over the land an equivalent number of times. Before the first turning movement of the plug 2 occurs, the plug 62 of the on the discharge of water from the system ceasing, no further operation of the cock 2 can take place, until the dial 63 isle-set From Figure 4 it will also be seen that should the letter R 'on the dial 63 be brought beneath the pointer 64, the water way through the cock 34 willbe open, with the teeth 65 in such a position that the pawl 66 will not actuate the dial 63 and the cock 2 therefore will go on opening and closing indefinitely. If the letter N be brought opposite the pointer 64, the water way through the cock 34 will be closed, and the cock 2 will not operate at all, owing to there being no passage of water to the cylinder 6. v

The regulator (Figures 5 to 8) comprises a cylinder 68 closed at the bottom and. divided into three compartments 69, and 71. The division between the uppermost compartment 69 and the central compartment 70 consists of a disc 72 secured to the lower ends of hangers 73 bolted inside the cyli'n der. A bucket leather 74 securedto the underside of the disc 72 renders the division watertight. Also secured to the underside of the disc 72 is a spiral spring 75 the lower end of which supports a plunger 76, the latter providing the division between the central compartment 70 and the lowermost compartment 71.

The pipe 3 from the repeater (Figures 1 and 2) leads into the compartment '71,

while from the latter a pipe 77 leads to a sprayer 110, Fig. 9. e

The pipes 3 and 77 both project into the compartment 71, the latter pipe having a downwardly extending portion '77 located centrally in the compartment 71.

The plunger 76 is formed with a flange 78 having portions cut away at 7 8 in order that said flange will rest or sit on the ends of the pipes 3 and 77 within the cylinder 68 when said plunger is as far down as it willgo in the cylinder.

To enable the regulator to be connected with a further regulator, a further outlet pipe 79 leading from the compartment 71 is provided. This pipe 79 connects with a passage 79 in a fitting 80 preferably hung" mm the pipe 77 l A pin 81 passes horizontally through the fitting 80 has keyed on each end an arm 81, said arms being connected at their outer ends by a .pin 82 passing through a'hori' Zontal "slot 83 in lug 8 1 projecting from a valve 85 hinged at its upper sage to the stem of a cone-shaped valve 86 entered in and capable of being seated in the portion 77 of the pipe 77.

The valve 85 is adapted to control the flow of water through .the passage 79 to the pipe 7 9, by closing the inner end of said passage, g

Projecting downwards from the plunger 76, are two directly opposite rods87, each of which has reason a sliding rm 88 named above a eompression spnng 89 which normally force said armsupwards. The arms 88 are connected chains 90 with the arms 81. A vertical re 91 screwing into'the lugs 84 of the valve 85 is adapted. to be engaged by the plunger 76' as the latter moves downwards in the cylinder es. 7

A draining cook 92 at the bottom of the cylinder 68 has pivotall connected to its" handle 93, a rod w'hic" worksvertically in a tube or uide 95. I '94 upwards 116,6061: 92 is opened nd on pushing said rod downwards said cock is closed.

The disc 72 is formed with a central boss 96 through which screws a nipple 97, on the lower end of which is a nut 98, the latter providing the means of securing the spring 75 and the bucket leather 74 to the disc 72.

A rod 99 provided with a thumb piece 100 at its upper end, and formed with an enlarged and slightly tapered lower end 101 Figure 7madehollow to take a ball 102 is threaded externally to screw into the nipple- 97, a cross'pin 103 being inserted in the en'- and passes into the pipe 77 through the open lower end of the portion 77 of the latter. For the sake of facilitating the il lustration of the regulator the plunger 76 has been shown suspended, normally it rests on the inner ends of the pipes 3 and 77.

The outflow of water from the pipe 77 is restricted by the latter being connected with a s rayer, therefore all the water entering the compartment 71 cannot escape by way of the pipe 77. It is here necessary to mention that the compartment 70 or the space between the disc 72 and plunger 76 is filled with water.

The water unable to escape 'via the pipe 77 accumulates in the compartment 71, and the pressure thereof forces the plunger 76 upwards against the action of the spring 7 5 and water held in the compartment 70.

The water in the compartment 70 is forced upwards and presses the ball 102 against a seating at the lower end-"ofthe On pulling the rod lll5 port 104 thereby blocking the escape of: water through the latter, and said water can therefere only escape into the uppermost compartment 69 by passing'around the screw threads between the tapered and'enlarged end 101 and the nipple 37. If it is desired that the water in the compartment 7 Q shall pass quickly into the compartment 69, the end 101 is not screwedrtightly. into the nipple 97, but if on the other hand it is desired that the escape of water from the compartment 70 to the compartment 69 shall be slow, then the end 101 is screwed 7 further into the nipple 9'7. 7

The plunger 76 rises in the cylinder 58 against. the action or" the spring and the water in the compartment 70 and when high enough tightens the chains 90 which raise the arms 81, the latter in turn lifting the valves 86 and and rod 91.

The valve 86 as itpasses further into th portion '7'? of the pipe 7771's caught by the water passing into: the latter, and seated witha sudden movement in said portion '77 thereby completely closing the lower end of the latter.

This sudden movement of the valve 86 pulls the valve 85 up clear of the entrance to the passage 7 9 and allows water to pass through the pipe 79 to the next regulator, which is likewise connected with a sprayer, and also with a further regulator if necessary. Each regulator operates in turn as described and after having operated each remains with the plunger 7 6 forced upwards the entrance to the pipe 7'? closed, and with the entrance to the pipe 7 9 open. The last regulator to be operated is not provided with an outlet pipe 79, or valve 85, therefore when the valve 86 in said regulator closes the entrance to the pipe 77 leading ,to the last sprayer or watering device, there is no way of escape for the water and the pressure in the system at once increases, and it is this increase of pressure which also occurs in the pipe 3, that actuates the piston 54C inathe cylinder 55 of the repeater to ultimately bring about the closing of the cock 2, as has already been described. Simultaneously with the closing of theicock 2 of the repeater, the cocks at and 47 ot the latter are opened to provide for the escape of the Water held in the pipe and the parts in communication therewith, by the downward movements o1 the plunger or plungers Z6 Figure 5 which force the water in the space or spaces 71 back through the pipe 3 to discharge from the cock 4-7 of the repeater, together with the water from the cylinder 7 or" the latter.

During downward movement of. each plunger 76 the water which has passed from the compartment 70 up in tothe compartment 6%) may return into the former compartment by way of the port 10 in the enlarged end 101 of the rod 99, the ball 102 having dropped on the cross pin Wt as shown thereby leaving said port i l topen. 7

7 The length of time during which water shall issue from a sprayer connected with the pipe 77 and designated at 110 in Fig. 9 is controlled by the regulator fronrwhich said sprayer receives its supply water, the

action of the regulator being governed by the rate at which the water escapes from the compartment 70 to the compartment 69, and by the resistance of the spring 75.

Thus it will be seen that the issue of water from the sprayer can be made to extend over long or short periods, by adjusting the enlarged end 101 of the rod 99 in the nipple 9'7, to permit the water to pass slowly or quickly from the ;compartment 70 to the compartment 69 as required. 7

By regulating the length of time the sprayer shall discharge water, a given quantity of water is enabled to be sprayed over the land, said given quantity of water being discharged at predetermined intervals, by the action of the repeater.

The presence of the spring 7 5 in the regu later renders the same positive in operation, as when the water supply is cut off by the cock 2 of the repeater, said spring ensures the return or downward movement of the plunger 76, whereby the valve 86 opens the lower end of the portion 77 and the valve 85 closes the entrance to the passage 79 owing to the plunger76 striking and moving the rod 91 downwards, the regulator being again ready for use the next time water passes to same.

I claim as my invention:

1. Apparatus for use in watering land comprising a main cock including an inlet, an outlet and a cock plug adapted to control the passage of water to a sprayer; a lever on said cock, a cylinder, plungersin said cylinder connected with one end of said lever on the cock plug, said cylinder being adapted to receive water from the inlet side of said cock; a second cylinder, plungers in said second cylinder connected with the other end of said lever, said second cylinder being adapted to receive water from the outlet of the cock; means for discharging water from the cylinders; and means whereby there is caused in the pipe leading water from .the cock, a pressure greater than that which exists in said pipe when the sprayer is in use. 7 r

2. Apparatus for use in watering land, comprising a main cock controlling the passage of water to a sprayer; a leve on the main cock, a cylinder containing plungers connected with one end of said lever adapted to receive water through a pipe from the inlet side of said main cock, for the purpose of opening the latter, a second cylinder,

plunger-s in the second mentioned cylinder connected with the other end of said lever adapted to receive water through a pipe from the pipe leading water from said main cock, for the purpose of closing the latter, check catches coacting with said lever, cocks on the pipes to the cylinders, opened and closed by the operation of the lever on the main cock; means for discharging water from the cylinders; and means .whereby there is caused in the pipe leading water from the main cock a pressure greater than that which exists in said pipe when the sprayer is in use.

3. In apparatus having a pair of cylinders containing plunger-s operated to open and close a main cock controlling the passage of water to a sprayer, a main cook, a cylinder in communication with the pipe leading from said cock, a plunger in said cylinder adapted to be operated by pressure in said pipe in excess of that which. exists therein when the sprayer is in use, for the purpose of putting the cylinder in which plungers are operated to close the main cock, in communication with the pipe leading from the main cock.

4. In apparatus according to claim 1, a cylinder in communication with the pipe leading from the main cock controlling the passage of water to the sprayer; a spring actuated plunger in said cylinder, a pipe line connecting the outlet side of the main cock with the second mentioned cylinder, and a rod connected to and moving with the plunger rod for the purpose of opening and closing said pipe line.

5. In apparatus according to claim 1 a cylinder in communication at one end with the pipe leading from the main cock controlling the passage of water to the sprayer; a plunger in said cylinder, a rod on said plunger working through an end of the cylinder; a compression spring on the plunger rod between the plunger and a cylinder end; a pipe providing communication between the pipe leading from the cock controlling the passage of water to the sprayer, and the second mentioned cylinder; a cock for opening and closing the last mentioned pipe; at discharge cock on the latter pipe; a rod adjustably connected at one end with the plunger rod, and connected at its other end to the handle of last mentioned cock.

6. An apparatus according to claim 1 characterized by the provision of a spring connecting the plungers in each cylinder, the latter having a water inlet and outlet at the end of the cylinder, opposite that through which the plunger rod works.

7. In apparatus for use in watering land, a cock adapted to control passage of water to a sprayer, a cylinder, a pipe providing communication between the inlet side of the cock and the cylinder, plungers in said land, a main control cock,

cylinder operable to open said cock; a cock on said pipe for opening and closing same: and a discharge cock on said pipe.

8. In apparatus for use in watering land,

a cock controlling'thei passage of water to a sprayer, a. lever on the plug of said cock, cylinders, plungers in said cylinders, rods connecting said plunger-s with said lever; a pipe providing communication between the inlet side of said cock and one of the cylinders; a pipe providing communica )n between the outlet side of said cock and the other of said cylinders, and cocks in the pipes to said cylinders connected with the lever on the control cock, so asto be opened and closed by the movement of said lever.

9. Apparatus for use in watering land, according to claim 8, wherein the cotks on the pipe between the inlet side of the con .trol cock and the cylinder connected therewith are arranged and connected, so that one of said cocks opens simultaneously with the closing of the other, and wherein the cocks on the pipe between the outlet side of the control cock and the cylinder connected therewith are arranged and connected to open and close together for the purpose set forth.

10. In apparatus for use in watering land a cock controlling the passage of water to a sprayer having a plug, a plate secured adjacent said cock and receiving said plug; cylinders secured to said plate; a lever on the cock plug; stops and catches on said plate, and an arm on said lever working between said stops and engageable with the catches.

11. An apparatus for controlling the watering of land according to claim 10, wherein the arm on the lever mounted on the cock plug has a pointed outer end and wherein each catch is pivoted and sloped inwards and upwards at its lower end and is normally pressed inwards against a stop by a spring, said catch, the second mentioned stop and spring being mounted on a pivoted plate normally pressed downwards against a stop by an adjustable spring.

12. In apparatus for use in watering a cylinder, plungers in said cylinder operable to open the main control cock; a pipe from the inlet side of said cock, to said cylinder; a cock on said pipe including a movable part, a toothed member carried by the movable part; a pawl on. the main control cock engaging said toothed member, and adjustable means for regulating the passage of water through said pipe.

13. Apparatus for use in watering land according to claim 12 wherein the toothed attachment comprises a dial with teeth in a portion of its edge, and wherein the pawl engaging therewith is a spring pawl secured on the main cock plug.

1e. Apparatus for use in watering iand according to claim 12, characterized in that the port through the second mentioned cock is formed with enlarged ends, and by the 5 provision of position indicating markings on the toothed member, and a pointer coacting with said markings.

15. Apparatus for use in watering land according to claim 12 characterized by the provision of means for indicating the ad- 0 justment of the adjustable regulating means.

In testimony whereof I hereunto afiix my signature.

DONALD ELDER. 

